Question # 1

If a = [1,4,3] and B= [2,-1,5] athen the mid point M of AB is:

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[1,1,1.5]

[2,2,1.5]

[1.5,1.5,4]

None of these

a ______quantity is one that possesses both magnitude and direction.

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Scalar

Vector

Segment

None of these

The vector i = [1,0] is called unit vector along:

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x-axis

y - axis

z- axis

Botha a and y-axis

The modulus of 12-5i is:

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7

13

√7

119

Vector i =

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[1,0]

[0,1,0]

[0,0,1]

None of these

If|a| =|b|=|a + b|=1, then|a+ b| = 5, then|a-b| =

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4

6

5

3

Vector additon is:

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Commutative

Associative

Commutative and Associative

None of these

The modulus of a vector i-i+ k is:

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√3

1

√2

∞

The angle between the vectors u = [-3 , 5] and v = [6 , -2] is:

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π/2

-3π/2

π

None of these

O (0,0)is called:

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Position vector

Free vector

Unite vector

Null vector

The positive real number which is the measure of the length of a vector is called the

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Unit vector

Modulus

Inverse

None of these

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ECAT Mathematics Chapter 23 Pre Engineering Online Test MCQs With Answers

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